Shinto and Budhism
According to this, the main god of Shinto, “Amaterasu Omikami,” is also positioned as an incarnation of the Buddha called “Dainichi Nyorai.”
Shinto and Confucianism
The core of Confucian teaching is the maintenance of relationships through the expansion of morality. It was introduced to Japan earlier than Buddhism and developed into various theories. For example, the Confucian virtues of “loyalty” and “filial piety” strengthen the emperor system and parent-child relationships and supplement the contents of Shinto.
I think that the perception of the three religions in early-modern Japan is briefly summarized in the following sentences.
“Know-how for sucess in this world” is learned from Confucianism, “one person’s blessing” is prayed to Shinto Gods, and “posthumous salvation” is prayed to Buddha. It seems that it was a general religious idea of the common people of the early modern period to divide the roles of the three religions and follow them.（http://nippon-seishinbunka-kenkyujo.blog.jp/archives/6445129.html）
Taoism and Shinto
Onmyoji, Abe no Seimei (Seimei Abe)
Among them, Seimei Abe (921-1005) is a symbol of Onmyoji because of his unique talent and his activities.
“Onmyoji, Seimei Abe, was a person who used to perform fortune-telling and ceremonies for His Majesty the Emperor in Japan during the Heian period at the Onmyō-ryō in the Ministry of “Nakatsukasa” (the general affairs), which is responsible for all the duties of the imperial court.”
He did not swallow the Chinese Onmyodo. He established Japan’s unique Onmyodo based on the differences between Japan and China. He is also said to have innovated fortune-telling.https://www.homes.co.jp/cont/press/reform/reform_00533/
Seimei Abe living in Japanese subculture
He is still featured in novels and anime works. The influence extends to Japanese subculture. Onmyoji, Seimei Abe, is still contributing to the expansion of Japanese cultural interests around the world.
Click here for novels, movies, TV animations, games, etc. on Onmyoji.
Click here for the youkai that Onmyoji was fighting and the relationship between Shinto and youkai